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Invasive Species

What are invasive species?

Invasive species can be defined as any non-native organism that can cause harm to the health of humans, the environment or the economy. Alien invasive species are recognized globally as the second largest threat to biological diversity and native species.

What are invasive plants?

An invasive plant can be defined as "a plant that is non-native to the ecosystem under consideration and whose introduction causes, or is likely to cause, economic or environmental harm or harm to human health”. Many invasive plant species have no predators to keep their populations in check.Click on INVASIVE SPECIES on the left sidebar for more detailed information.

What plants are a priority in the LRISS region?

LRISS has defined categories that prioritize plants for treatment. There are 6 categories that include: Prevent, Eradicate, Contain, Strategic Control, No Action and Insufficient Information. The definitions and full list can be found under our Resources Page. The priority category for the invasive plants featured on our website are found in the description.

Lillooet Plantwise Guide

Click here to access the Lillooet Plantwise Guide, an eBook created by LRISS in partnership with Splitrock Environmental which is intended to provide gardeners and landscapers in the Lillooet Region with information on how to identify the top invasive garden plants and offers native alternatives to "Grow Instead".